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  • EI
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中國精品科技期刊2020
張艷艷,張捷,張菁,等. 醒面對面團水分狀態、微觀形態和物性的影響研究[J]. 食品工業科技,2024,45(6):42?48. doi: 10.13386/j.issn1002-0306.2023040071.
引用本文: 張艷艷,張捷,張菁,等. 醒面對面團水分狀態、微觀形態和物性的影響研究[J]. 食品工業科技,2024,45(6):42?48. doi: 10.13386/j.issn1002-0306.2023040071.
ZHANG Yanyan, ZHANG Jie, ZHANG Jing, et al. Research on the Influence of Moisture State, Microscopic Morphology and Physical Properties of the Resting Dough[J]. Science and Technology of Food Industry, 2024, 45(6): 42?48. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2023040071.
Citation: ZHANG Yanyan, ZHANG Jie, ZHANG Jing, et al. Research on the Influence of Moisture State, Microscopic Morphology and Physical Properties of the Resting Dough[J]. Science and Technology of Food Industry, 2024, 45(6): 42?48. (in Chinese with English abstract). doi: 10.13386/j.issn1002-0306.2023040071.

醒面對面團水分狀態、微觀形態和物性的影響研究

Research on the Influence of Moisture State, Microscopic Morphology and Physical Properties of the Resting Dough

  • 摘要: 為研究醒面對冷凍面團品質的影響,本文研究了醒面過程中(0、30、60、90、120 min),面團水分分布的變化規律以及面團冷凍后冰晶分布、微觀結構和蠕變恢復特性的變化。結果表明:隨著醒面時間的延長,面團中可凍結水含量降低了0.96%;微觀結構的結果表明,面團在凍結過程中形成的冰晶空隙和數量逐漸減小,冰晶分布越來越均勻;隨著醒面時間從0 min延長至120 min,冷凍面團的平均空隙面積從22.65減小到11.80,空隙數目從10627.00減少到3346.00;隨著醒面時間的延長,在蠕變階段,冷凍面團的最大蠕變柔量Jmax顯著增加(P<0.05),零剪切粘度η0顯著降低(P<0.05);面團醒發120 min后,冷凍面團最大蠕變柔量Jmax降低了0.50×10?4 Pa?1,零剪切粘度η0降低了0.43×105 Pa?1,這說明冷凍面團的硬度降低,面團的形狀更容易保持;在恢復階段,瞬時柔量J0與黏彈性柔量Jm分別增加了1.26×10?4和2.88×10?4 Pa?1,冷凍面團的恢復力增加。綜上,醒面降低了面團中可凍結水的含量,提高了面團的持水力,減小了冷凍過程中冰晶對面團網絡結構的破壞,從而提高了冷凍面團的品質。

     

    Abstract: To study the effect of resting on the quality of frozen dough, the changes in the moisture state of the dough during the resting process (0, 30, 60, 90, 120 min), the moisture distribution of dough and their effects on ice crystal distribution, microstructure, and creep recovery characteristics after dough freezing were investigated. The results showed that the freezable water content in the dough was decreased by 0.96% with the extension of the resting time. The pores and number of ice crystals formed in the dough during the freezing process gradually decreased and the distribution of ice crystals became more and more uniform. The average pore area decreased from 22.65 to 11.80 with the extension of the resting time from 0 min to 120 min, and the number of pores decreased from 22.65 to 11.80 with the extension of the resting time. The maximum creep flexibility Jmax increased significantly (P<0.05) and the zero shear viscosity η0 decreased significantly (P<0.05) during the creep phase as the resting time was extended. After resting for 120 mins, the maximum creep flexibility Jmax of frozen dough decreased by 0.50×10?4 Pa?1, and the zero shear viscosity η0 decreased by 0.43×105 Pa?1. This indicated that the hardness of frozen dough decreases and the shape of the dough was easier to maintain. During the recovery process, the instantaneous flexibility J0 and viscoelastic flexibility Jm increased by 1.26×10?4 and 2.88×10?4 Pa?1, respectively, and the recovery force of the frozen dough increased. In summary, resting process of dough would reduce the content of freezeable water, improve the water holding capacity, and reduce the damage of ice crystals to the dough network structure in the freezing process to improve the quality of the frozen dough.

     

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